Fix: The minimum size of the historical message window for the classification operator is 1. #12778 (#12779)

### What problem does this PR solve?

Fix: The minimum size of the historical message window for the
classification operator is 1. #12778

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/agent/form/categorize-form/index.tsx

@@ -37,7 +37,9 @@ function CategorizeForm({ node }: INextOperatorForm) {
           <QueryVariable></QueryVariable>
           <LargeModelFormField></LargeModelFormField>
         </FormContainer>
-        <MessageHistoryWindowSizeFormField></MessageHistoryWindowSizeFormField>
+        <MessageHistoryWindowSizeFormField
+          min={1}
+        ></MessageHistoryWindowSizeFormField>
         <DynamicCategorize nodeId={node?.id}></DynamicCategorize>
         <Output list={outputList}></Output>
       </FormWrapper>